TASK 1. Use ought to, shall and should in their various modal functions in the follow­ing sentences:

1.I think I let your parents know we are here. (Moral obligation)
2. You have gone to the concert. Why you miss the music? (Advice)
3.I think I put all my cards on the table. (Moral duty)
4. It's late. You go to bed. (Recommendation)
5. (you) more careful? (Expectation based on normal or logical probability)
6. "How can you know what his feelings are?" "I know, for he's always telling me about them." (Normal or logical probability + objectivity)
7. It was surprising that they have met at all. (Expectation + subjectivity)
8. He remembered that he (not) smoke unless invited to do so. (Duty/obligation + subjectivity)
9. When Charles saw Ann playing tennis, he came up and said: "Are you sure you be doing that?" (Duty/obligation + objectivity)
10. I get you some fresh coffee, Ed? (Offer/suggestion)
11. The responsibility is entirely mine. I acted very wrongly in­deed. I (not) have let this relationship start. (Duty/obligation + objectivity)
12. "When is he going back?" "How I know?" (Rejection of duty)
13. Mrs Murrey will be moving into the new house next month. It be less bleak for her. (Expectation based on normal or logical probability)
14. You have no cause to complain of me, dear. There be no difficulty about money. (Strong intention for the future)
15. "Meg is in town shopping." "Who took her in?" "Renny drove her to the train. He be back at any moment". (Strong future probability)
16.George did not see why he not discuss the matter with his chief. (Surprise, regret, and indignation)

TASK 2. Use the required form of the infinitive after ought to and should:

1. But we ought (to have) your brother here, to tell us exactly how far we can go.
2. Tea is between half past five and six, and it should (to be) ready now.
3. He couldn't see anything. He thought that he ought (to bring) a torch.
4. Should the baby (to play) with a box of matches?
5. If you're in love it ought (to make) you happy. You ought (to laugh).
6. The doctor said it was appendicitis and she ought (to operate) on.
7. You should (to see) him yesterday on horseback.
8. One day the headmaster came on Jack, who should (to sweat) on the sports ground, sitting comfortably in a gardener's shed reading a book and eating a large piece of cocoa-nut ice.
9."Your father and I should (to arrange) everything before I came here," he said.
10. Oughtn't you (to answer) that letter now?
11. Where is his car? He shouldn't (to leave) it unattended.
12. He drove at great speed. He knew that about this hour the guests should (to arrive) at his house.
13. "Well, I'm very glad to know at last what it was all about." "You ought (to tell) before."
14. Then he should (to laugh), but instead he heard himself say­ing: "Everything you say is quite true.".
15. Anything we can do to clear up this miserable affair ought (to do).
16. "I don't think he had the least idea of what I meant." "You should (to be) more explicit, my dear."

TASK 3. Fill in the blanks in the following sentences choosing between ought to and should:

Note: Remember that although ought to and should are very close in the meaning of obligation and are often interchangeable, the former tends to express moral obligation and is not frequent in negative sentences whereas the latter is common in instructions and corrections.

1. He looked more than ever out of place; he have stayed at home.
2. I don't think people gossip like that about other people.
3. She said, "You know, I think I get across to the station and see what goes on."
4. I want him to do what's right. It (not) be necessary to persuade a man to do that.
5. My mother frowned at him and shook her head in a way that meant that he (not) say things like that in front of me.
6. "Strange," said the boy, "how, when people are either very old or very young, they are always wanting to do something they (not) do."
7. "It is very wicked of you," she said. "You be ashamed of yourself."
8. After she had gone I found myself wondering whether I do anything for her.
9. I'll see and speak to Maurice. He (not) behave like that.
10.I expect you to tell me the way to do it. You know.
11.She is a clever girl and her French be perfect.
12.The children were out dancing when they have been learn­ing their lessons.
13.I realize now I (not) have said anything.
14. "I'm not very fit. I'm having trouble with my leg." "I see. Well, I think you go and see a doctor I know."
15. Anne was quite capable of coming down to make herself a cup of cocoa when she be asleep.
16. He felt very low and I thought I do all I could to cheer him up.